Biodiversity Heritage Library
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Agate : physical properties and origin, archaeology and folk-lore / By Oliver C. Farrington, Curator of Geology, [and] Berthold Laufer, Curator of Anthropology.
Publication info: Chicago :Field Museum Press,1927.
Geology leaflet / Field Museum of Natural History.
Publication info: Chicago, Ill. :Field Museum of Natural History,1925-.